FilterHandle.java

/**************************************************************************************
 * Copyright (C) 2008 EsperTech, Inc. All rights reserved.                            *
 * http://esper.codehaus.org                                                          *
 * http://www.espertech.com                                                           *
 * ---------------------------------------------------------------------------------- *
 * The software in this package is published under the terms of the GPL license       *
 * a copy of which has been included with this distribution in the license.txt file.  *
 **************************************************************************************/
package com.espertech.esper.filter;

/**
 * Marker interface for use with {@link FilterService}. Implementations serve as a filter match values when
 * events match filters, and also serve to enter and remove a filter from the filter subscription set.
 */
public interface FilterHandle
{
    /**
     * Returns the statement id.
     * @return statement id
     */
    public String getStatementId();
}